<template>
  <view v-show="!isLoading" class="container">
    <!-- 商品图片轮播 -->
    <SlideImage v-if="!isLoading" :images="goods.images" />

    <!-- 商品信息 -->
    <view v-if="!isLoading" class="goods-info m-top20">
      <!-- 价格、销量 -->
      <view class="info-item info-item__top dis-flex flex-x-between flex-y-end">
        <view class="block-left dis-flex flex-y-end">
          <!-- 商品售价 -->
          <text class="floor-price__samll">￥</text>
          <text class="floor-price">{{ goods.price }}</text>
          <!-- 划线价 -->
          <text class="original-price">￥{{ goods.linePrice }}</text>
        </view>
        <view class="block-right dis-flex">
          <!-- 销量 -->
          <view class="goods-sales">
            <text>已销售{{ goods.initSale }}</text>
          </view>
        </view>
      </view>
      <!-- 标题、分享 -->
      <view class="info-item info-item__name dis-flex flex-y-center">
        <view class="goods-name flex-box">
          <text class="twolist-hidden">{{ goods.name }}</text>
        </view>
        <!-- #ifdef MP-WEIXIN -->
        <view class="goods-share__line"></view>
        <view class="goods-share">
          <button class="share-btn dis-flex flex-dir-column" open-type="share">
            <text class="share__icon iconfont icon-fenxiang-post"></text>
            <text class="f-24">分享</text>
          </button>
        </view>
        <!-- #endif -->
      </view>
      <!-- 商品卖点 -->
      <view v-if="goods.salePoint" class="info-item info-item_selling-point">
        <text>{{ goods.salePoint }}</text>
      </view>
    </view>

    <!-- 选择商品规格 -->
    <view
      v-if="goods.isSingleSpec == 'N'"
      class="goods-choice m-top20 b-f"
      @click="onShowSkuPopup(3)"
    >
      <view class="spec-list">
        <view class="flex-box">
          <text class="col-8">选择：</text>
          <text
            class="spec-name"
            v-for="(item, index) in goods.specList"
            :key="index"
            >{{ item.name }}</text
          >
        </view>
        <view class="f-26 col-9 t-r">
          <text class="iconfont icon-xiangyoujiantou"></text>
        </view>
      </view>
    </view>

    <!-- 商品SKU弹窗 -->
    <SkuPopup
      v-if="!isLoading"
      v-model="showSkuPopup"
      :skuMode="skuMode"
      :goods="goods"
      @addCart="onAddCart"
    />

    <!-- 商品描述 -->
    <view v-if="!isLoading" class="goods-content m-top20">
      <view class="item-title b-f">
        <text>商品详情</text>
      </view>
      <block v-if="goods.description != ''">
        <view class="goods-content-detail b-f">
          <jyf-parser :html="goods.description"></jyf-parser>
        </view>
      </block>
      <empty v-else tips="亲，暂无商品描述" />
    </view>

    <!-- 底部选项卡 -->
    <view class="footer-fixed">
      <view class="footer-container">
        <!-- 导航图标 -->
        <view class="foo-item-fast">
          <!-- 首页 -->
          <view class="fast-item fast-item--home" @click="onTargetHome">
            <view class="fast-icon">
              <text class="iconfont icon-shouye"></text>
            </view>
            <view class="fast-text">
              <text>首页</text>
            </view>
          </view>
          <!-- 购物车-->
          <view class="fast-item fast-item--cart" @click="onTargetCart">
            <view v-if="cartTotal > 0" class="fast-badge fast-badge--fixed">{{
              cartTotal > 99 ? "99+" : cartTotal
            }}</view>
            <view class="fast-icon">
              <text class="iconfont icon-gouwuche"></text>
            </view>
            <view class="fast-text">
              <text>购物车</text>
            </view>
          </view>
        </view>
        <!-- 操作按钮 -->
        <view class="foo-item-btn">
          <view class="btn-wrapper">
            <view class="btn-item btn-item-deputy" @click="onShowSkuPopup(2)">
              <text>加入购物车</text>
            </view>
            <view class="btn-item btn-item-main" @click="onShowSkuPopup(3)">
              <text>立即购买</text>
            </view>
          </view>
        </view>
      </view>
    </view>

    <!-- 快捷导航 -->
    <shortcut bottom="200rpx" />
  </view>
</template>

<script>
import { setCartTabBadge, setCartTotalNum } from "@/utils/app";
import * as GoodsApi from "@/api/goods";
import * as CartApi from "@/api/cart";
import jyfParser from "@/components/jyf-parser/jyf-parser";
import Shortcut from "@/components/shortcut";
import SlideImage from "./components/SlideImage";
import SkuPopup from "./components/SkuPopup";

export default {
  components: {
    jyfParser,
    Shortcut,
    SlideImage,
    SkuPopup,
  },
  data() {
    return {
      // 正在加载
      isLoading: true,
      // 当前商品ID
      goodsId: null,
      // 商品详情
      goods: {},
      // 购物车总数量
      cartTotal: 0,
      // 显示/隐藏SKU弹窗
      showSkuPopup: false,
      // 模式 1:都显示 2:只显示购物车 3:只显示立即购买
      skuMode: 1,
    };
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad(options) {
    // 商品ID
    this.goodsId = parseInt(options.goodsId);
    // 加载页面数据
    this.onRefreshPage();
  },

  methods: {
    // 刷新页面数据
    onRefreshPage() {
      const app = this;
      app.isLoading = true;
      Promise.all([app.getGoodsDetail(), app.getCartTotal()]).finally(
        () => (app.isLoading = false)
      );
    },

    // 获取商品信息
    getGoodsDetail() {
      const app = this;
      return new Promise((resolve, reject) => {
        GoodsApi.detail(app.goodsId)
          .then((result) => {
            const goodsData = result.data;
            if (goodsData.skuList) {
              goodsData.skuList.forEach(function (sku, index) {
                goodsData.skuList[index].specIds = sku.specIds.split("-");
                goodsData.skuList[index].skuId = sku.id;
              });
            }
            app.goods = goodsData;
            app.skuMode = 3;
            resolve(result);
          })
          .catch((err) => reject(err));
      });
    },

    // 获取购物车总数量
    getCartTotal() {
      const app = this;
      return new Promise((resolve, reject) => {
        CartApi.list()
          .then((result) => {
            app.cartTotal = result.data.totalNum;
            setCartTotalNum(app.cartTotal);
            setCartTabBadge();
            resolve(result);
          })
          .catch((err) => reject(err));
      });
    },

    // 更新购物车数量
    onAddCart() {
      this.$toast("添加购物车成功");
      this.getCartTotal();
    },

    /**
     * 显示/隐藏SKU弹窗
     * @param {skuMode} 模式 1:都显示 2:只显示购物车 3:只显示立即购买
     */
    onShowSkuPopup(skuMode = 1) {
      this.skuMode = skuMode;
      this.showSkuPopup = !this.showSkuPopup;
    },

    // 跳转到首页
    onTargetHome(e) {
      this.$navTo("pages/index/index");
    },

    // 跳转到购物车页
    onTargetCart() {
      this.$navTo("pages/cart/index");
    },
  },

  /**
   * 分享当前页面
   */
  onShareAppMessage() {
    const app = this;
    // 构建页面参数
    const params = app.$getShareUrlParams({
      goodsId: app.goodsId,
    });
    return {
      title: app.goods.name,
      imageUrl: app.goods.images[0],
      path: `/pages/goods/detail?${params}`,
    };
  },

  /**
   * 分享到朋友圈
   * 本接口为 Beta 版本，暂只在 Android 平台支持，详见分享到朋友圈 (Beta)
   * https://developers.weixin.qq.com/miniprogram/dev/framework/open-ability/share-timeline.html
   */
  onShareTimeline() {
    const app = this;
    // 构建页面参数
    const params = app.$getShareUrlParams({
      goodsId: app.goodsId,
    });
    return {
      title: app.goods.name,
      imageUrl: app.goods.images[0],
      path: `/pages/goods/detail?${params}`,
    };
  },
};
</script>

<style>
page {
  background: #fafafa;
}
</style>
<style lang="scss" scoped>
@import "./detail.scss";
</style>
